<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-bind指令</title>
    <style>
        .classA{color: red;}
     </style>
     
</head>
<body>
    <script src="../js/vue.js"></script>
    <div id="app">
        <div v-bind:class="{'classA': isRed }">我是v-bind指令，绑定class属性</div>
        <div v-bind:style="{ fontSize: size + 'px' }">我是v-bind指令，绑定style属性</div> 
    </div>
</body>
<script>
    var vm = new Vue({
          el: '#app',
          data: {
	 isRed : true,
	 size: 20
          }
    })
</script>
</html>